Pear-shaped expanded-base full-flow penetration test probe used for marine ultra-soft soil in-situ test

Abstract

The invention discloses a pear-shaped expanded-base full-flow penetration test probe used for a marine ultra-soft soil in-situ test. The pear-shaped expanded-base full-flow penetration test probe comprises a probe rod and an expanded base probe end as well as a test system arranged between the probe rod and the probe end; the test system comprises a friction resistance pressure sensor, an end resistance pressure sensor and a hole water pressure sensor for inducting side friction resistance, end resistance and hole water pressure; the test system is further equipped with a hole pressure filterring which can seep water, and acts on the hole water pressure sensor; and the test system is equipped with communication equipment capable of transmitting an induction signal. The probe fills up theblank of a static penetration test and exploration probe before expanded bore pile construction, and can continuously and precisely test relevant parameters of a soil layer and timely outputs changingvoltage resistances along with depth of a penetrated soil layer, so that practical and reliable reference is provided for expanded bore pile engineering construction, and therefore, true and reliableanalysis is made on physical and mechanical property indexes of a seabed soil body.

Description

technical field [0001] The invention relates to a full-flow penetrating probe capable of evaluating the characteristics of seabed ultra-soft soil, in particular to a full-flow penetrating probe capable of in-situ testing. Background technique [0002] With the continuous development of coastal areas, the country has more and more engineering projects in the construction of coastal areas and the development of marine resources, such as land reclamation, sea-crossing bridges, submarine tunnels, offshore wind power, offshore oil drilling platforms, Submarine combustible ice drilling platform and so on. While the number of projects has increased substantially, marine engineering has also continued to develop from near seas to far seas, from shallow seas to deep seas, and the scale of projects is increasing day by day. This puts forward higher requirements for the safety and durability of marine engineering. In coastal soft soil foundation treatment, the foundation form widely ...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The present invention provides a pear-shaped bottom-expanding full-flow penetration probe for in-situ testing of marine ultra-soft soil. In-situ testing, or the problem of high testing costs, and at the same time solves the problem that conventional cone probes cannot perform full-flow penetration testing in seabed / underwater soft soil layers

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